Home / 5,210.72-7,191.27-2,853.21

Finding the Fourth Proportional to 5,210.72, 7,191.27 and 2,853.21

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Solution

The fourth proportional to 5,210.72, 7,191.27 and 2,853.21 is: 3,937.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.72 : 7,191.27 = 2,853.21 : x
  2. Step 2: Convert to fraction form
    5,210.72/7,191.27 = 2,853.21/x
  3. Step 3: Cross multiply
    5,210.72x = 7,191.27 × 2,853.21
  4. Step 4: Simplify right side
    5,210.72x = 20,518,203.48
  5. Step 5: Solve for x
    x = 20,518,203.48/5,210.72
  6. Step 6: Final answer
    x = 3,937.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.